In pharmaceutical packaging, materials do more than protect the product, they directly affect drug stability, safety, and user experience. For dosage forms such as granules, sachet granules, and powders, requirements for moisture protection, sealing integrity, and packaging reliability are especially strict. 8011 H18 PTP aluminum foil produced by MC Aluminum is one of the most mature and stable solutions for granule blister packaging.
Key Requirements for Granule Packaging Materials
Pharmaceutical granules are often highly hygroscopic, sensitive to light and oxygen, and require accurate dosing. Therefore, packaging materials must provide:
High barrier performance: effective protection against moisture, oxygen, and light
Strong heat-sealability: firm seals without cracking or powder leakage
Safety & compliance: meets regulations/standards for pharmaceutical contact materials
Stable mechanical properties: suitable for high-speed PTP blister lines
Among available foil alloys, 8011 in H18 temper performs particularly well overall.
What Is 8011 H18 PTP Aluminum Foil?
8011-H18 PTP aluminum foil is a rigid aluminum foil used as the lidding material for pharmaceutical blister packaging, offering excellent barrier and mechanical properties. It is widely used for tablets, capsules, and granules.
PTP refers to blister packaging. The granule blister packs commonly seen on the market are made by heat-sealing PTP aluminum foil to a plastic blister forming film. This structure stores each dose independently, improves portability, and uses the foil’s barrier function to reduce environmental impact.
8011 alloy is aluminum-based with additions such as iron and silicon (about 98% Al, with the remaining ~2% mainly Fe/Si). Compared with pure aluminum foil, it offers better tensile strength and puncture resistance, making it more suitable for production and real-world use.
H18 means full hard temper, providing high tensile strength and a "push-through" brittle behavior-allowing patients to press and break the foil easily to access the medicine.
Product Technical Specifications
| Alloy | 8011 |
| Temper | H18 |
| Typical thickness (mm) | 0.020 / 0.022 / 0.025 |
| Width | 100-1600 mm |
| Length | >500 m |
| Surface structure | single-side coated |
| Surface quality | no oil stains, no black spots, no obvious scratches |
| Application | blister packaging for pharmaceutical granules/sachet granules/powders |
| MOQ | 1-3 tons |
Advantages of PTP Foil for Granule Packaging
1.Excellent barrier: dense metallic structure blocks moisture, oxygen, and UV light, helping ensure stability throughout shelf life.
2.Strong mechanical performance: H18 foil offers high puncture/tear resistance; high bulge value supports automated high-speed blister production.
3.Safe and hygienic: non-toxic, odorless, clean surface; meets strict pharma hygiene requirements.
4.Heat-seal adaptability: with different heat-seal lacquer formulations, it can match multiple blister base films and packaging processes.
5.Good processability: flat surface, easy for printing and coating; bonds well to plastic blister films.
6.Lightweight & cost-effective: lower weight per area supports logistics cost reduction.
7.Recyclable: aluminum foil is 100% recyclable; coatings use food-grade polymers that can be separated during recycling.
Quality Control (Typical Targets)
| Thickness tolerance | ±0.002 mm (as required) |
| Tensile strength & elongation | tensile strength ≥ 180 MPa; elongation 2-5% |
| WVTR | < 0.1 g·m⁻²·day⁻¹ (38°C/90% RH) |
| OTR | < 0.01 cm³·m⁻²·day⁻¹·atm⁻¹ |
| Heat-seal strength | ≥ 8 N/15 mm |
| Surface roughness (Ra) | Ra ≤ 0.5 µm (before printing) |
| Coating uniformity | no obvious defects, bubbles, or scratches |
| Microbial limits | meets sterile/clean requirements |
Applications
8011-H18 PTP aluminum foil is mainly used as blister lidding for oral solid dosage forms, including:
Tablets
Capsules
Granules
Blister packs for confectionery and some health supplements
MC Aluminum's 8011-H18 foil features high bulge value, high heat-seal strength, and pinhole-free performance, with strict process control to ensure consistent quality. Products comply with Chinese, US, and EU standards, and support customized thickness (0.016-0.5 mm) and width (100-1700 mm).